EP0717248B1 - Réfrigérateur avec un registre d'air - Google Patents

Réfrigérateur avec un registre d'air Download PDF

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Publication number
EP0717248B1
EP0717248B1 EP95308294A EP95308294A EP0717248B1 EP 0717248 B1 EP0717248 B1 EP 0717248B1 EP 95308294 A EP95308294 A EP 95308294A EP 95308294 A EP95308294 A EP 95308294A EP 0717248 B1 EP0717248 B1 EP 0717248B1
Authority
EP
European Patent Office
Prior art keywords
plate
baffle
fresh food
switch
thermostat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95308294A
Other languages
German (de)
English (en)
Other versions
EP0717248A1 (fr
Inventor
Stephen G. Williams
Ronald W. Guess
Lori Ann Cook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP0717248A1 publication Critical patent/EP0717248A1/fr
Application granted granted Critical
Publication of EP0717248B1 publication Critical patent/EP0717248B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/06—Refrigerators with a vertical mullion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86734—With metering feature

Definitions

  • This invention relates generally to refrigerator air circulation systems, and more particularly to a motorized air baffle for controlling the flow of air within a fresh food compartment of a refrigerator.
  • Conventional dual compartment refrigerators of the forced air circulation type utilize a single evaporator and an evaporator fan for cooling a freezer compartment thereof.
  • the freezer compartment is coupled by a plurality of air passages through a divider wall to a fresh food compartment.
  • An air baffle is located within the fresh food compartment air inlet passage wherein the baffle is operable to control the passage of refrigerated air into the fresh food compartment.
  • the evaporator fan forces air flow across the evaporator coils and out the top of the freezer into a scoop which directs air to the fresh food compartment, past the baffle.
  • the baffle is manually adjustable for determining the proportional flow of air into the fresh food compartment during the freezer cooling cycle.
  • various systems have been provided for automatically operating the baffle for providing improved control over the fresh food compartment temperature.
  • U.S. Pat. No. 4,924,680 discloses a controllable baffle for a refrigeration apparatus.
  • the baffle includes a fixed plate and a movable plate each having corresponding apertures therethrough for permitting the control of air flow to a fresh food compartment.
  • the movable plate is slidably mounted to the fixed plate permitting straight line reciprocal motion of the movable plate with respect to the fixed plate.
  • a solenoid actuator is provided for driving the movable plate.
  • U.S. Pat. No. 4,282,720 to Stottmann et al., discloses a refrigerator fan control for a refrigerator.
  • This reference shows a rotatable air valve or baffle.
  • the valve rotates between its open and closed positions of 90° by a solenoid that is momentarily energized.
  • the energization of the solenoid effectively rotates the valve 45° in each direction of its armature reciprocal movement.
  • U.S. Pat. No. 4,920,758, to Janke et al. discloses an air circulation system for a refrigeration apparatus having a controllable baffle for selectively opening or closing dual output ports.
  • the baffle includes a rotatable disk having open portions and closed portions.
  • a motor is coupled to the disk for selectively rotating the disk so that its respective open portions are in selective alignment or disalignment with the dual output ports such that air circulation within the refrigerator is controlled.
  • U.S. Pat. No. 4,903,501, to Harl discloses a controllable baffle for a refrigeration apparatus wherein means are provided for preventing freeze up of the baffle.
  • the baffle includes a fixed plate and a movable plate each having corresponding apertures therethrough for permitting the control of air flow to a fresh food compartment.
  • the fixed plate is provided with a heating device molded therein which is operable to maintain the fixed plate above the freezing temperature to prevent moisture from freezing thereon.
  • spacer means are provided for maintaining the movable plate in spaced relation with the fixed plate for minimizing moisture which may bridge between the plates and freezer.
  • a solenoid actuator is provided for driving the movable plate.
  • US-A-3,364,841 discloses a ventilation grill for a door or window which has two apertured relatively slidable plates in which the aperture edges are chamfered to define tapering openings in the grill.
  • a refrigerator having a cabinet defining a freezer compartment and a fresh food compartment separated from each other by a divider wall, the divider wall having an air passage for communicating between said compartments, said refrigerator further having an evaporator disposed in said freezer compartment, a compressor fluidly connected with said evaporator for moving refrigerant therethrough, an evaporator fan for moving air over the evaporator, a power supply selectively connected to said compressor and evaporator, and a system for controlling air circulation within the fresh food compartment comprising:-
  • the baffle has means for removing frost build up on the baffle such that the baffle operation is not impaired by frost.
  • a thermostat is preferably provided to sense temperature within the fresh food compartment.
  • a first switch is then operatively associated with the cam for selectively energizing the motor such that the baffle may be moved from the closed position to the open position when the thermostat indicates the fresh food requires cooling.
  • a second switch can be operatively associated with the cam for selectively energizing the motor such that the baffle may be moved from the open position to the closed position when the thermostat indicates the fresh food compartment does not require cooling.
  • a second thermostat may be provided to sense temperature within the freezer compartment.
  • an evaporator fan and baffle control system can be provided including a switch which is operatively associated with the cam for connecting the second thermostat and the evaporator fan in series with a power supply when the baffle is in the closed position and for further connecting the fresh food compartment thermostat and the evaporator fan in series with the power supply when the baffle is in the open position.
  • the first plate aperture may also have chamfered edges for forming a sharp edge periphery on the first plate surface facing the second plate such that frost build up on the second plate may be removed by the chamfered edges of the first plate aperture during movement of the second plate relative to the first plate.
  • a refrigeration apparatus such as a refrigerator/freezer 10
  • a refrigeration apparatus such as a refrigerator/freezer 10
  • the invention is shown utilized with a side-by-side refrigerator/freezer.
  • other types of refrigeration apparatus may be used in conjunction with the air baffle 12 of the present invention, as will be obvious to those skilled in the art.
  • the refrigerator/freezer 10 includes cabinet 14 housing a conventional liner 16 therein, with suitable insulation provided between the liner 16 and the cabinet 14.
  • the liner 16 includes a plurality of wall portions, as is well known, and may be of one piece construction or of multiple piece construction, as necessary or desired.
  • the refrigerator/freezer 10 includes an insulating separator or divider wall 18 which may utilize the liner wall portions.
  • the cabinet 14, liner 16 and divider wall 18 together define a below-freezing, or freezer, compartment 20 and a fresh food, or above-freezing, compartment 22. Suitable doors (not shown) are provided for selective access to the freezer and fresh food compartments 20 and 22.
  • the freezer and fresh food compartments 20 and 22 are cooled by circulating refrigerated air therethrough which has been refrigerated as a result of being passed in heat exchange relation with a conventional evaporator 24.
  • An evaporator fan 26 draws air across the evaporator 24 with the cooled air passing through a duct 28 behind a rear wall 30 of the freezer compartment 20 and further through a freezer compartment air inlet 32.
  • the duct 28 is also in communication with a scoop, or passage 34, in the separator 18.
  • the passage 34 is in communication with an air duct 36 in the upper rear section of the fresh food compartment 22, which duct 36 includes a fresh food compartment air inlet opening (not shown).
  • the selectively positionable baffle 12 overlies the air inlet opening and is operated by a control described below to control the passage of refrigerated air into the fresh food compartment 22.
  • the passage 34, the duct 36 and the opening collectively define an air inlet passageway.
  • baffle 12 is illustrated overlying the air inlet opening, the baffle 12 could be disposed at various positions within the passage 34 or the duct 36 as is obvious to those skilled in the art.
  • Refrigerated air that passes through the passage 34 is discharged through air inlets of the baffle 12 to circulate within the fresh food compartment 22 and subsequently return to the freezer duct 28 through a return air outlet duct, or passage 38 located in the separator 14 at the bottom rear of the fresh food compartment 22.
  • the refrigerated air in the freezer compartment 20 returns to the duct 28 at a freezer compartment air outlet 40 and mixes with the air returned from the fresh food compartment 22.
  • the mixed air is drawn by the evaporator fan 26 across the evaporator 24 during a cooling unit on cycle to remove heat therefrom and recirculate the air in the compartments 20 and 22.
  • the refrigeration apparatus 10 includes connected components such as a compressor 39 and a condenser fan, shown in FIG. 8, and a condenser and a defrost heater, not shown, as is well known.
  • the baffle 12 can be seen to include a fixed plate 42 and a slide plate 44.
  • the fixed plate 42 is of one-piece molded plastic construction and is generally rectangular shaped.
  • the fixed plate 42 includes a plurality of longitudinally spaced, laterally extending apertures 48 therethrough.
  • the apertures 48 are provided for enabling refrigerated air to enter the fresh food compartment 22.
  • An actuator mounting end 50 of the fixed plate 42 includes no such apertures 48.
  • the slide plate 44 is also of generally rectangular construction, but is of smaller size than the fixed plate 42.
  • the slide plate 44 includes a plurality of apertures 52 therethrough corresponding to the apertures 48 in the fixed plate 42.
  • the slide plate 44 is slidably mounted to the fixed plate 42 permitting straight line reciprocal motion of the slide plate 44 with respect to the fixed plate 42.
  • the fixed plate 42 includes a plurality of outwardly extending L-shaped slide members 54 for laterally constraining the slide plate 44 with respect to the fixed plate 42 while allowing longitudinal movement.
  • the L-shaped members 54 are laterally spaced apart a distance slightly greater than the width of the slide plate 44 and define a track within which the movable plate 44 can slide.
  • the slide plate 44 is slidably movable relative to the fixed plate 42 between an open position, with its apertures 52 in alignment with the fixed plate apertures 48 to permit refrigerated air to flow into the fresh food compartment, and a closed position wherein the apertures 48 and 52 are in disalignment to prevent the refrigerated air from entering the fresh food compartment 22.
  • a slide plate drive system 60 including a motor 62, a gear reduction mechanism 64 and a cam 68.
  • the motor is mounted to the gear reduction mechanism which operates in a known manner to reduce the motor speed output.
  • the gear reduction mechanism 64 is mounted to a housing 66 which is mounted to the fixed plate 42.
  • the cam member 68 disposed within the housing 66, is interconnected with the gear reduction drive output 69 and includes a first, second and third control surfaces; 68a, 68b and 68c, respectively.
  • the cam 68 operates to drive the slide plate such that the baffle may be selectively positioned in the closed or open position.
  • the first surface 68a of the cam 68 is disposed within a shaped slot 70 provided on slide plate 44.
  • the shaped slot 70 includes a first contact point 70a and a second contact point 70b.
  • rotation of the cam 68 causes the first control surface 68a to engage either the first or second contact point 70a or 70b, respectively, for moving the slide plate 44 relative to the fixed plate 42.
  • the first control surface 68a is positioned such that the slide plate is in a closed position.
  • the cam 68 is shown rotated 180 angular degrees from FIG. 4, whereby the first control surface 68a has engaged the second contact point 70b for moving the slide plate 44 to an open position.
  • the slide plate 44 is slidably mounted to the fixed plate 42 wherein a top surface 72 of the fixed plate and a bottom surface 74 of the slide plate 44 are slidably disposed adjacent each other.
  • the top surface 72 and the bottom surface 74 must substantially contact each other to provide a seal between the slide plate 44 and fixed plate 42.
  • the top surface 72 and the bottom surface 74 are preferably flat to within 0.25mm such that the gap between the two surfaces, 72 and 74, may be limited to no more than 0.15mm.
  • each of these edges, 76, 52a, 52b, 48a and 48b, respectively, is provided with a 45 degree chamfer such that each edge presents a sharp edge for contacting the facing plate and a 45 degree slope for forcing away frost build up.
  • FIGS. 8-11 a unique and simple evaporator fan control system and baffle control system of the present invention are shown.
  • the evaporator control system is such that evaporator fan 26 may be energized when either the fresh food compartment 22 or the freezer compartment 20 require cooling.
  • the baffle door control system is such that when the fresh food compartment requires cooling, the baffle 12 is open. However, when cooling of the fresh food compartment is not required, the baffle 12 is closed.
  • a freezer thermostat 80 and a fresh food thermostat 82 are shown.
  • the freezer thermostat 80 senses temperature in the freezer compartment 20 and the fresh food thermostat 82 senses temperature in the the fresh food compartment 22.
  • the freezer thermostat is electrically connected in series with the compressor 39 and the condenser fan 41 such that when the freezer thermostat 80 is closed, indicating that freezer cooling is required, the compressor 39 and condenser fan 41 are energized.
  • the fresh food thermostat is connected in series with the baffle motor 62 through a first switch 84 and a second switch 86 wherein the switches 84 and 86 are connected in parallel.
  • a third switch 88 is provided connected in series between the fresh food thermostat 82 and the evaporator fan 26.
  • the third switch 88 is also connected in series between the freezer thermostat and the evaporator fan 26. All of the switches, 84, 86 and 88 respectively, are operated by the cam 68.
  • the switches 84, 86 and 88 are shown assembled within the housing 66.
  • the second control surface 68b engages a cam follower 90 for selectively operating the first switch 84.
  • the second control surface 68b additionally engages a cam follower 94 for selectively operating the second switch 86.
  • the third control surface 68c engages a cam follower 96 for operating the third switch 88.
  • the fresh food thermostat is oriented in a position wherein a current path is provided through the contacts 82a and 82b.
  • the baffle is positioned in a closed position, as shown in FIG. 9.
  • the cam follower 90 resides in a recess 92 provided on the second control surface 68b such that the contacts 84a and 84b are not engaged.
  • the cam follower 94 is engaged by the second control surface 68b such that switch 86 is closed wherein contacts 86a and 86b are engaged.
  • the cam follower 96 is positioned by the third control surface 68c such that contacts 88a and 88b are engaged thereby connecting the evaporator fan in series with the freezer thermostat 80.
  • the freezer thermostat 80 controls the operating of the evaporator fan 26, the compressor 39, and the condenser fan 41 responsive to the cooling demands of the freezer compartment 20.
  • the fresh food thermostat 82 opens contacts 82a and 82b and closes contacts 82a and 82c.
  • the baffle motor 62 is energized through the second switch 86 which is in the closed position as described above.
  • Energization of the motor 62 causes the cam 68 to rotate, closing the first switch 84 and moving the slide door 44 from a closed toward an open position.
  • 180 degree rotation of the cam 68 moves the baffle 12 from a completely closed position to a completely open position.
  • the recess 92 provided on the second control surface 68b operates to open the second switch 68, thereby deenergizing the motor 62.
  • the third control surface drives the third switch 88 to close contacts 88c and 88b wherein the evaporator fan 26 is energized through the fresh food thermostat 82.
  • FIGS. 10 and 11 illustrate the switch configuration when the fresh food compartment 22 is calling for cooling and the baffle is in a completely open position.
  • the cam follower 90 is engaged by the second control surface 68b such that the first switch 84 is closed.
  • the cam follower 94 resides in the recess 92 such that the second switch 86 is open.
  • the cam follower 96 resides in a recess 98 provided on the third control surface 68c such that the third switch 88 is oriented to close contacts 88b and 88c.
  • the fresh food thermostat 82 controls the operation of the evaporator fan 26.
  • the baffle 12 is positioned in an open position. It can be understood, therefore, that whenever the baffle 12 is open, the evaporator fan is energized.
  • the fresh food thermostat 82 opens contacts 82a and 82c and closes contacts 82a and 82b.
  • the baffle motor 62 is energized through the first switch 84 which is in the closed position.
  • Energization of the motor 62 causes the cam 68 to rotate, closing the second switch 86 and moving the slide door 44 from an open toward a closed position.
  • 180 degree rotation of the cam 68 moves the baffle 12 from a completely open position to a completely closed position.
  • the recess 92 provided on the second control surface 68b operates to open the first switch 84, thereby deenergizing the motor 62.
  • the third control surface drives the third switch 88 to close contacts 88a and 88b wherein the evaporator fan 26 is energized through the freezer thermostat 80.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (8)

  1. Réfrigérateur (10) ayant un coffret (14) définissant un compartiment de congélateur (20) et un compartiment de réfrigérateur (22) séparés l'un de l'autre par une paroi de séparation (18), la paroi de séparation (18) ayant un passage d'air (34) pour communiquer entre lesdits compartiments (20, 22), ledit réfrigérateur (10) ayant en outre un évaporateur (24) disposé dans ledit compartiment de congélateur (20), un compresseur (39) relié de manière fluidique audit évaporateur (24) afin de déplacer du réfrigérant à travers, un ventilateur d'évaporateur (26) afin de faire passer l'air sur l'évaporateur (24), une alimentation (L1, N) reliée de manière sélective audit compresseur (39) et audit évaporateur (24), et un système destiné à commander la circulation d'air dans le compartiment de réfrigérateur (22), comportant :
    un déflecteur (12) situé dans ledit passage d'air (34) et qui peut être positionné dans une position ouverte ou fermée afin d'ouvrir et de fermer de manière sélective ledit passage d'air (34), ledit déflecteur (12) comprenant une première plaque (42) ayant une ouverture (48) à travers définissant une ouverture à travers laquelle peut passer l'air réfrigéré; et
    une deuxième plaque (44) mobile par rapport à ladite première plaque (42) et comprenant une ouverture (52) à travers définissant une ouverture à travers laquelle peut passer l'air réfrigéré;
    un moteur (62); et
    une came (68) interconnectée avec ledit moteur (60) pour entraínement et reliée à ladite deuxième plaque (44) dudit déflecteur (12) de telle sorte que la rotation de ladite came (68) fonctionne afin de déplacer de manière sélective ladite deuxième plaque (44) par rapport à ladite première plaque (42) de façon à positionner lesdites ouvertures dans un alignement présélectionné pour commander le mouvement d'air réfrigéré à travers ledit passage (34); caractérisé par ladite ouverture de deuxième plaque (52) qui a des bords chanfreinés (52a, b) afin de former une périphérie à bord vif sur la surface de la deuxième plaque (44) face à ladite première plaque (42) de telle sorte que l'accumulation de givre sur ladite première plaque (42) peut être enlevée par lesdits bords chanfreinés (52a, b) de ladite ouverture de deuxième plaque (52) pendant le mouvement de ladite deuxième plaque (44) par rapport à ladite première plaque (42), ladite deuxième plaque (44) ayant en outre un bord périphérique externe (76) qui est chanfreiné.
  2. Réfrigérateur selon la revendication 1, comportant en outre :
    un thermostat (82) destiné à détecter la température dans ledit compartiment de réfrigérateur (22);
    un premier commutateur (84) associé de manière opérationnelle à ladite came (68) afin de relier de manière sélective ledit moteur (62) à ladite alimentation (L1, N), de telle sorte que ledit déflecteur (12) peut être déplacé de ladite position fermée vers ladite position ouverte quand ledit thermostat (82) indique que ledit compartiment de réfrigérateur (22) exige un refroidissement; et
    un deuxième commutateur (86) associé de manière opérationnelle à ladite came (68) afin de relier de manière sélective ledit moteur (62) à ladite alimentation (L1, N), de telle sorte que ledit déflecteur (12) peut être déplacé de ladite position ouverte vers ladite position fermée quand ledit thermostat (82) indique que ledit compartiment de réfrigérateur (22) n'exige pas de refroidissement.
  3. Réfrigérateur selon la revendication 2, dans lequel ladite came (68) a une première surface de commande (68a) et une deuxième surface de commande (68b), ladite première surface de système de commande (68a) agissant afin de positionner ledit déflecteur (12) dans ladite position ouverte ou fermée, ladite deuxième surface de commande (68b) agissant afin de fermer ledit premier commutateur (84) quand ledit déflecteur (12) est dans ladite position fermée et afin d'ouvrir ledit premier commutateur (84) lorsque ledit déflecteur est dans ladite position ouverte, et ladite deuxième surface de commande (68b) agissant en outre afin d'ouvrir ledit deuxième commutateur (86) lorsque ledit déflecteur (12) est dans ladite position fermée et afin de fermer ledit deuxième commutateur (86) quand ledit déflecteur (12) est dans ladite position ouverte.
  4. Réfrigérateur selon la revendication 2 ou 3, et comportant en outre un deuxième thermostat (80) afin de détecter la température dans ledit compartiment de congélateur (20); un troisième commutateur (88) associé de manière opérationnelle audit déflecteur (12) afin de relier le deuxième thermostat (80) et ledit ventilateur d'évaporateur (26) en série avec ladite alimentation (L1, N) quand ledit déflecteur (12) est dans ladite position fermée et relier ledit thermostat de compartiment de réfrigérateur (82) et ledit ventilateur d'évaporateur (26) en série avec ladite alimentation (L1, N) quand ledit déflecteur (12) est dans une position ouverte.
  5. Réfrigérateur selon la revendication 4, dans lequel ladite came (68) possède en outre une troisième surface de commande (68c), ledit troisième commutateur (88) étant actionné par un déplacement de ladite troisième surface de commande (68c).
  6. Réfrigérateur selon l'une quelconque des revendications précédentes, dans lequel ladite ouverture de première plaque (48) a des bords chanfreinés (48a, b) afin de former une périphérie de bord vif sur la surface de la première plaque (42) faisant face à ladite deuxième plaque (44) de telle sorte que l'accumulation de givre sur ladite deuxième plaque (44) peut être enlevée par lesdits bords chanfreinés (48a, b) desdites ouvertures de première plaque (48) pendant le déplacement de ladite deuxième plaque (44) par rapport à ladite première plaque (42).
  7. Réfrigérateur selon la revendication 6, dans lequel lesdits bords chanfreinés (48a, b; 52a, b) de ladite ouverture de première plaque (48) et de ladite deuxième ouverture de plaque (52) comportent un chanfrein à 45° afin de former lesdits bords vifs et afin de procurer une pente de façon à forcer l'accumulation de givre à l'écart des surfaces plates en contact.
  8. Réfrigérateur selon l'une quelconque des revendications précédentes, dans lequel ladite première plaque (42) et ladite deuxième plaque (44) sont formées de telle sorte que l'espace entre ladite première plaque (42) et ladite deuxième plaque (44) est inférieur à 0,15 mm.
EP95308294A 1994-11-21 1995-11-20 Réfrigérateur avec un registre d'air Expired - Lifetime EP0717248B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/342,972 US5490395A (en) 1994-11-21 1994-11-21 Air baffle for a refrigerator
US342972 1994-11-21

Publications (2)

Publication Number Publication Date
EP0717248A1 EP0717248A1 (fr) 1996-06-19
EP0717248B1 true EP0717248B1 (fr) 2001-06-13

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EP95308294A Expired - Lifetime EP0717248B1 (fr) 1994-11-21 1995-11-20 Réfrigérateur avec un registre d'air

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US (1) US5490395A (fr)
EP (1) EP0717248B1 (fr)
KR (1) KR100386048B1 (fr)
AU (1) AU687263B2 (fr)
CA (1) CA2162307C (fr)
DE (1) DE69521278T2 (fr)

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DE10203081B4 (de) * 2001-08-31 2009-07-23 Lg Electronics Inc. Kühlluftumwälzvorrichtung eines Kühlschranks

Also Published As

Publication number Publication date
US5490395A (en) 1996-02-13
DE69521278D1 (de) 2001-07-19
AU687263B2 (en) 1998-02-19
KR960018476A (ko) 1996-06-17
CA2162307A1 (fr) 1996-05-22
DE69521278T2 (de) 2001-10-11
CA2162307C (fr) 2006-01-24
EP0717248A1 (fr) 1996-06-19
AU3669095A (en) 1996-05-30
KR100386048B1 (ko) 2003-08-06

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